44.6″ · 1,134 mm wide · 1.18″ (30 mm) frame · 71.4 lb (32.4 kg)

Solar panelJinkoSolar

JinkoSolar JKM620N-66HL4M-BDV

Name: JinkoSolar JKM620N-66HL4M-BDV
Brand: JinkoSolar

132 half-cut cells, N-type TOPCon, bifacial, 2.0mm, heat strengthened glass. Power classes 590–650 W in the CEC list.

CEC listed · May 1, 2025UL 61730Bifacial · 80 ± 5%12-yr product + 30-yr performance warrantyPVEL Top Performer 2025N-type TOPCon

Power class

Power (STC)620 WCEC nameplate
Efficiency≈23.0%calculated from area
%/°C Pmax−0.29CEC test: −0.299
Output at year 3087.4%performance warranty

Power classes

CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation · 13 models

Model	Pmax	Voc, V	Isc, A	Vmp, V	Imp, A	Efficiency	PTC	CEC listed
JKM590N-66HL4M-BDV	590 W	47.88	15.72	39.87	14.08	≈21.8%	555 W	May 1, 2025
JKM595N-66HL4M-BDV	595 W	48.08	15.78	40.02	14.87	≈22.0%	560 W	May 1, 2025
JKM600N-66HL4M-BDV	600 W	48.28	15.84	40.16	14.94	≈22.2%	565 W	May 1, 2025
JKM605N-66HL4M-BDV	605 W	48.48	15.90	40.31	15.01	≈22.4%	570 W	May 1, 2025
JKM610N-66HL4M-BDV	610 W	48.68	15.96	40.46	15.08	≈22.6%	575 W	May 1, 2025
JKM615N-66HL4M-BDV	615 W	48.88	16.02	40.60	15.15	≈22.8%	580 W	May 1, 2025
JKM620N-66HL4M-BDV	620 W	49.08	16.08	40.74	15.22	≈23.0%	584 W	May 1, 2025
JKM625N-66HL4M-BDV	625 W	49.28	16.14	40.88	15.29	≈23.1%	589 W	Feb 11, 2026
JKM630N-66HL4M-BDV	630 W	49.48	16.20	41.02	15.36	≈23.3%	594 W	Feb 11, 2026
JKM635N-66HL4M-BDV	635 W	49.68	16.26	41.16	15.43	≈23.5%	599 W	Feb 11, 2026
JKM640N-66HL4M-BDV	640 W	49.88	16.32	41.30	15.50	≈23.7%	604 W	Feb 11, 2026
JKM645N-66HL4M-BDV	645 W	50.08	16.38	41.44	15.57	≈23.9%	608 W	Feb 11, 2026
JKM650N-66HL4M-BDV	650 W	50.28	16.44	41.57	15.64	≈24.1%	613 W	Feb 11, 2026

≈ efficiency = Pmax ÷ panel area 2.701 m² (datasheet size).

Build & dimensions

JinkoSolar datasheet · Cali-Graf calculation

Dimensions93.8 × 44.6 × 1.18 in2,382 × 1,134 × 30 mm
Module area2.7 m² (29.1 ft²)length × width
Weight71.4 lb (32.4 kg)
Cells132 half-cut cellsN-type TOPCon
Front glass2.0mm, Anti-Reflection Coating
Back cover2.0mm, Heat Strengthened Glass
FrameAnodized Aluminum Alloy
Junction boxIP68 Rated
Cable / connector12 AWG, 1400mm (55.12in)

Heat & cold behaviour

JinkoSolar datasheet · CEC PV Module List (Oct 7, 2026) · Cali-Graf calculation

	Datasheet	CEC listing test
Pmax coefficient γ	−0.29 %/°C	−0.299 %/°C
Voc coefficient β	−0.25 %/°C	−0.257 %/°C
Isc coefficient α	+0.04 %/°C	+0.044 %/°C
Vmp coefficient	≈ −0.34 %/°C	—
Operating cell temperature	NMOT 45 ± 2 °C	NOCT 46 °C

Vmp coefficient ≈ γ − α (datasheet); used only for the hot-roof voltage estimate.

Away from lab conditions — CEC listing test points

Class	Pmax at NOCT	Vmp × Imp at NOCT	Pmax at 200 W/m²	Low-light efficiency vs STC
590 W	547.8 W	45.62 V × 12.01 A	—	—
595 W	580.8 W	45.8 V × 12.68 A	—	—
600 W	585.5 W	45.96 V × 12.74 A	—	—
605 W	590.5 W	46.13 V × 12.8 A	—	—
610 W	595.4 W	46.3 V × 12.86 A	—	—
615 W	600.3 W	46.46 V × 12.92 A	—	—
620 W	467.7 W	38.65 V × 12.1 A	119.5 W	96%
625 W	471.4 W	38.78 V × 12.16 A	120.5 W	96%
630 W	475.2 W	38.92 V × 12.21 A	121.4 W	96%
635 W	479 W	39.05 V × 12.27 A	122.4 W	96%
640 W	482.8 W	39.18 V × 12.32 A	123.4 W	96%
645 W	486.6 W	39.31 V × 12.38 A	124.4 W	96%
650 W	490.4 W	39.44 V × 12.43 A	125.3 W	96%

Pmax = Vmp × Imp from the CEC listing; low-light efficiency = Pmax at 200 W/m² ÷ (20% of STC Pmax).

Electrical & strength ratings

JinkoSolar datasheet

Max system voltage1,500 V
Max series fuse35 A
Fire rating (UL 61730)Type 29
Module temperature−40 °F to +185 °F−40 °C to +85 °C

Packaging: 36 per pallet · 504 per container

Bifacial performance

NLR SAM module library · JinkoSolar datasheet

BifacialYes
Bifaciality80 ± 5%
Back cover2.0mm, Heat Strengthened Glass

Rear gain depends on mounting height and ground reflectance; flush roof mounts receive little rear light.

Certifications

CEC PV Module List (Oct 7, 2026) · JinkoSolar datasheet · Clean Energy Council (Australia)

UL 61730IEC 61215IEC 61730Fire rating Type 29 (UL 61730)ISO 14001ISO 45001ISO 9001IEC 61215:2021 / IEC 61730:2023

UL 61730CEC listing
IEC 61215datasheet
IEC 61730datasheet
Fire rating Type 29 (UL 61730)datasheet
ISO 14001factory, datasheet
ISO 45001factory, datasheet
ISO 9001factory, datasheet
IEC 61215:2021 / IEC 61730:2023TÜV SÜD Product Service GmbH, valid to Jun 2028

Warranty & degradation

JinkoSolar datasheet

Straight line from 100% to the end-of-warranty value — linear, per datasheet.

Product warranty12 years
Performance warranty30 years, linear
Year 30≥ 87.4%

Independent reliability testing

Kiwa PVEL Scorecard · RETC PV Module Index

2025

PVEL Top Performer

this series

Tests passed as Top Performer

DH, HSS, LID+LETID, MSS, PAN, PID, TC

PVEL Scorecards

JinkoSolar named Top Performer, 2014–2026

2023, 2025, 2026

RETC Overall Highest Achiever

JinkoSolar, manufacturer level

PVEL Top Performer tests

Year	Product	Tests
2025	JKMxxxN-66HL4M-BDV	DHHSSLID+LETIDMSSPANPIDTC

Tested bill of materials

PVEL-tested factoryChina
Cell technology (tested BOM)n-type TOPCon
Module design (tested BOM)bifacial - 2.0 glass//2.0 glass
Power class range tested580-625W
Hail test ice ball40 mm

Details describe the tested sample, not every module of the series.

RETC PV Module Index — JinkoSolar

Year	Recognition
2023	Overall Highest Achiever; High Achievement in Performance (LeTID RESISTANCE); High Achievement in Quality (Hail durability test); High Achievement in Reliability (Pid resistance, SDML, Thermal cycle test)
2024	High Achievement in Performance
2025	Overall Highest Achiever
2026	Overall Highest Achiever; High achievement in performance; High achievement in reliability; Performance discipline high achiever (Temperature coefficient, PAN file, Iam); Quality discipline high achiever (BOM verification); Reliability discipline high achiever (Damp heat, Tc, Sdml, Pid)

Inverter compatibility & string sizing

JinkoSolar datasheet · Cali-Graf calculation · NLR PVWatts v8 · CEC PV Module List (Oct 7, 2026) · inverter datasheets · NLR SAM inverter library · CEC Grid Support Inverter List (Oct 7, 2026)

CityColdest air, °CHottest cell, °CString inverter

51.9 V

Voc when cold

per panel

34.1 V

Vmp when hot

per panel

Max panels / string

max DC 600 V

Min panels / string

MPPT from 60 V

Defaults come from NLR TMY weather (coldest hour, hottest modeled cell). Code calculations (NEC 690.7) use the ASHRAE extreme annual minimum, which is usually colder — enter it above.

String inverters most named in SoCal permits

Inverter	Max DC input	MPPT	Window source	Panels per string
Tesla 1538000-xx-y	600 V	60–480 V	datasheet	2–11
Solis (Ginlong) S6-EH1P10K-H-US	600 V	80–520 V	datasheet	3–11
Solis (Ginlong) Solis-1P7.6K-4G-US	600 V	100–500 V	datasheet	3–11
Qcells Q.VOLT H7.6SX	498 V	234–498 V	CEC test window	7–9

Microinverters (one per panel)

No microinverter in the reference set lists this power class in its recommended module power range.

Voltage check against the microinverter datasheets — confirm the pairing on the manufacturer’s module compatibility list. Rows appear only when the panel’s power is inside the microinverter’s recommended module power range.

SolarEdge and other optimizer-based systems size strings by the optimizer rules — use the manufacturer’s designer. Reference inverters: most named in SoCal permits since Oct 2024.

Expected production in Southern California

NLR PVWatts v8 · Cali-Graf calculation

PanelsCity for chartSystem size

City	kWh / kW / yr	kWh / panel / yr	kWh / system / yr	Sun, kWh/m²/day
Los Angeles	1,676	1,039	11,430	6.08
Palmdale	1,835	1,138	12,515	6.69
Chula Vista	1,696	1,052	11,567	6.11
Huntington Beach	1,643	1,019	11,205	5.89
Riverside	1,696	1,052	11,567	6.21
Santa Clarita	1,724	1,069	11,758	6.28

Estimate for comparison, not a quote: shading, roof orientation and local losses change real output. Roof mount, 20° tilt, south, 14% system losses.

Compare with similar 620 W panels

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · datasheets

Panel	Pmax	Efficiency	γ Pmax (CEC)	Voc, V	Isc, A	Size	PVEL (product / brand)
JinkoSolar JKM620N-66HL4M-BDV	620 W	≈23%	−0.299	49.08	16.08	93.8 × 44.6 in	product 2025
ZNShine Solar ZXM7-UHLDD144-615/N	615 W	≈24%	−0.281	52.9	14.72	—	product 2024, 2025, 2026
Waaree BiN-21-620	620 W	≥22.9%	−0.288	49.1	16.02	93.8 × 44.6 in	product 2026
Canadian Solar CS6.2-66TB-620HP	620 W	≈23%	−0.282	48.4	16.08	93.8 × 44.6 in	brand 5× (2020–2026)

Same fields from the same sources for every row; ≈ efficiency is calculated from the listed area. Comparable series: other brands, same product group, power range covering this class.

Documents

manufacturer documents

PDF
THE MOST DEPENDABLE SOLAR PRODUCT
Datasheet · Jinko Solar · Nov 2025
PDF
Module Warranty | Effective 2/2020
Warranty · Jinko Solar · Nov 2025

About JinkoSolar

CEC PV Module List (Oct 7, 2026) · Kiwa PVEL Scorecard · RETC PV Module Index · building permits

ManufacturerJinkoSolar
Listed in CEC asJinko Solar Co., Ltd, Jinko Solar Co., Ltd.
Websitejinkosolar.us
PVEL Top Performer (manufacturer)12 Scorecards (2014–2026)
RETC PV Module Index2023, 2024, 2025, 2026
Current panel series in CEC list68

Other series by SoCal permits

JKMxxxM-60HBL · 45JKMxxxN-54HL4-B · 10JKMxxxM-72HL-V · 6JKMxxxM-6RL3-B · 3JKMxxxM-72HL-TV · 3JKMxxxN-54HL4R-B · 1

Questions & answers

How efficient is the JinkoSolar JKM620N-66HL4M-BDV?

Calculated from the panel area (2.7 m²): about 23% for the 620 W class. 620 W over 2.7 m² equals about 230 W per square meter.

How much energy does one panel produce in Los Angeles or Palmdale?

PVWatts v8 with typical-year weather gives about 1,039 kWh per year per 620 W panel in Los Angeles and about 1,138 kWh in Palmdale (20° roof, facing south, 14% system losses).

How much power does it lose on a hot roof?

With γ = −0.29 %/°C, at a 77 °C cell temperature (hottest modeled hour in Palmdale) output is about 15% below the STC rating.

How many panels fit on one string?

With the Tesla 1538000-xx-y (max DC 600 V, MPPT from 60 V, datasheet) in Los Angeles the calculator gives 2–11 panels per string (Voc at 2 °C = 51.9 V, Vmp at 74 °C cell = 34.1 V). Final design must follow the inverter manual and NEC 690.7.

What does the warranty cover?

12 years on the product and 30 years linear on performance: at least 87.4% after 30 years (manufacturer datasheet).

How big and heavy is it?

93.8 × 44.6 × 1.18 in (2,382 × 1,134 × 30 mm), 71.4 lb (32.4 kg).

Is it bifacial?

Yes, bifaciality 80 ± 5%. Rear gain depends on mounting height and ground reflectance.

Has this panel been reliability-tested?

JKMxxxN-66HL4M-BDV was a PVEL Top Performer in 2025 (DH, HSS, LID+LETID, MSS, PAN, PID, TC).

Sources

California Energy Commission — Solar Equipment Lists, PV Module List, Inverter List (snapshot Oct 7, 2026).
JinkoSolar — datasheet THE MOST DEPENDABLE SOLAR PRODUCT.
Waaree — datasheet ELITE-R-SERIES-BiN-21-600-635-WEL-EPD-600-635-132-BiN-HC.
Canadian Solar — datasheet TOPBiHiKu6 Anti-Hail N-type Bifacial TOPCon Technology.
JinkoSolar — document library on the manufacturer’s website (links above).
Kiwa PVEL — PV Module Reliability Scorecard, Top Performer lists 2014–2026.
RETC — PV Module Index reports 2023–2026.
NLR (formerly NREL) — System Advisor Model CEC module and inverter libraries (version 2026.7.3).
Clean Energy Council (Australia) — Approved PV modules list (as of Oct 8, 2026).
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Chula Vista, Huntington Beach, Riverside, Santa Clarita.
Inverter datasheets — Solis (Ginlong), Tesla (manufacturer documents).
Building permits — Southern California permit portals. Equipment matched from permit descriptions.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).